Kernel::Orientation_3

Orientation	fo.operator() ( Kernel::Point_3 p, Kernel::Point_3 q, Kernel::Point_3 r, Kernel::Point_3 s)
		returns POSITIVE, if $$s lies on the positive side of the oriented plane $$h defined by $$p, $$q, and $$r, returns NEGATIVE if $$s lies on the negative side of $$h, and returns COPLANAR if $$s lies on $$h.

Refines

See Also